Box material for box-toes or the like for shoes.



Ill

UNITED STATES PATENT OFFICE.

ALBERT 1. RYAN, OF CINCINNATI, OHIO, ASSIGNOR T0 B YAN IDEAflSIAIN AflD BLACK- ING COMPANY, OF LYNN, MASSACHUSETTS, (A FIRM. OOMPOBED 0E ALBERT J. RYAN, 01' CINCINNATI, OHIO, AND ALEXANDER J. McGORHICK AND DENNIS F. MARKS BOTH OI LYNN, MASSACHUSETTS.)

BOX MATERIAL FOB BOX-TOMS OR THE LIKE FOR SHOES.

No Drawing.

To all whom it may concern:

Be it known that I Aman'r J. Bus, a citizen of the United. states, and a resident of the city of Cincinnati, in he county of Hamilton and State of Ohio, ave invented certain new and useful Improvements in Box Material for Box-Toes or the like for Shoes, of which the following is a specification.

In the manufacture of shoes in the past, it has been the practice to supply for the stiffened portion of the shoe such as the box toe, a piece of material known as box materlal, which has been treated with certain gums and waxes which will harden when dry. Accordingly in making up'the shoe, this um is placed on the box portions and the s cc lasted and set aside to dry for several days. A composition of waxes has also been discovered which may be ut on the box portions to harden them,'an then these portions softened up before use, by temperatures. Severe. days are r lured to harden these articles also, "but the anger of getting um and wax on the shoe is done away wit Then, for a further ste a composition has been put. on the mar et with which to harden box toes or the like, which mill become soft when treated with live steamrand will be rehardened almost immediately.

Nowin the lasting of a shoe it is necessary after the preliminary pulling over of the parts on the last, to wipe in the shoe by inserting-it with the last ma machine for tlfiit purpose. If the toe portion is wet and gummy, this wiping in W111 injure the shoe etause of exuding matter. If the box portions are of the quick hardening material, they will be too hard after the pulling over -to c te the wi er.

n the latter 'nd, therefore, the shoe must be subjected to a second treatment of steam before wiping in is done, and with any chance extra pressure or slight carelessness the steam may become so hot as to permanently injure the leather of the shoe, although at dry heat shoe leather will crack lower than wit live steam heat.

It is the object, therefore, of my invention to furnish a box material for box toes or the like, which will soften at a moderate temperature of say one hundred and seventy-five flpeollcition 02 Letters Patent.

Application lied September B, 19.

Patented June 18, 1918.

serial No. 0,550.

to two hundred and twent five degrees Fahrenheit of dry heat an will quickly" harden upon cooling1 N 0 shoe leather will reach the point where it will crack at dry heat of two hundred and twenty-live degrees Fahrenheit Such a composition material is valuable for making models of shoes from patterns also, constructing the whole shoe or the principal parts thereof of this materiahsuch material adapted to he handled by the operator in the resenee of a non-injurious heat and hardened piece bypieee at will.

I have discovered that a gum commonly known as bold black gum is perfectly adapted for the purpose intended, and in order to rovide my new box material I take sheets 0 felt, canvas, leather or other per meable material, and thoroughly saturate the same with bold black gum dissolved in a suitable solvent such asbenzol or naphtha. The web, preferably of felt, is treated wit the gum solution in any convenient way n til it is thoroughly saturated with the bolt. black gum, which at-once. hardens, leaving the sheet in a hard, firm, flexible condition from which the shoe forms, box toes and such can be readily and easily cut of the proper size and she e for use, or the box material can be sol commercially in flat sheets to shoe manufacturers.

,Bold black far as I am in ormed, similar to asphalt-um for example, which is imported to this com. try from Australia under the above name. It comes in chunks the size of an efig. It has a high melting point in its natura state, such as to make it impossible to dip felt into it, but when treated with naplltha or benzol seems to change its nature so as to have the melting points hereinafter noted.

The important feature of the invention and the novel element is not the fact that a hardened blank is made which is old, bu that the hardened blank has the characteristics of softening at a fairly low temperature and immediately hardenin when allowed to cool. The box materia softens so that it can be properly worked at a temperature from ow hundred and seventy-five to two hundred and twenty-five degrees Fahrenheit without running or beoomin gummy or sticky, and as soon as the heat is is a mineral product, so I' removed, it hardens a few minutes or less enty-five totwo hundred end twentyefive cle- Fahrenheit is not sohigh that the hfl-fihoe'will encounter any such temperatures, and if he does," the shoe will fletaln itsshnpe if nothing also occurs but the eatin I Haigng' thusdpscribed invention, what I'claim as new aid desirejto secure by Letters Patent, is:

1. .A box material for box toes or the like for shoes comprising apiece of material permeable to gums an waxes in general said materialpermeatedwith a solution of bold black gum and a: suitable solvent.

2. A for-hex and the like for shoes a p eceof material permeablo to gums waxes in general, said u ew material permeated with a composition comprising a gum bani at normal temperature, and a solvent of benzol or no htha, which composition softens at from 17 to 225 F.

without running, and burdens at once at normal atmospheric tem eratures.

8. A box materia for box toes and. the

like for shoes comprising a piece ofmaterial" temperatures.

v ALBERT J. RYAN. Witnesses: 

